package com.guoxin.facade;

/**
 * @author guoxin
 * @date 2019年8月26日
 */
public class Stereo {
	private Stereo() {
	}

	private static class StereoHandler {
		private static Stereo stereo = new Stereo();
	}

	public static Stereo getInstance() {
		return StereoHandler.stereo;
	}

	public void on() {
		System.out.println(" Stereo on ");
	}

	public void up() {
		System.out.println(" Stereo up ");
	}

	public void off() {
		System.out.println(" Stereo off ");
	}
}
